New Roof Shingles Over Old

The felt should be secured every six inches with nails or staples.

New roof shingles over old.

Find a pre screened local roofing contractor. If a shingle is. Leave the old valley flashing in place and install new over it. In this video we provide details on how to install roof shingles over existing shingles.

Shingles are designed for flat surfaces. Although it sounds like a good idea we can assure you the cons heavily outweigh the pros. Since the roofer is able to identify and repair high risk areas a new roof offers better quality than an old one. Current shingles are curling or in bad shape the new shingle roof should lay flat on your old one.

How to do it remove caps. Install a layer of roofing felt over the roof before you begin installing the new shingles. A new roof fixes existing issues and traps less heat than multiple layers which can cause shingles to break and curl faster. They don t do a good job of bridging over gaps dips or humps including the.

Step 3 cover the old shingles. We discuss the nesting method which helps minimize an uneven appear. To level out an existing asphalt shingle roof rip down reduce the height of two courses of shingles as shown in the drawing below. If you need to redo your roof you might be tempted to save some money by having another layer installed over the existing shingles.

Is it okay to put the new shingles right over the old ones. Remove air vents and pipe flashings by prying out or unscrewing the fasteners holding the fixture. Along the rakes install a new j channel drip edge which wraps around the old rake flashing and starter courses. Doing it now will make it easier to keep the reroofing job clean.

In fact the only pro to a shingle over is it s cheaper and cleaner. Damaged shingles should be removed to check the decking for problems. When contemplating a new roof many people hope to simply do a shingle over and avoid the extra cost and mess of tearing off the existing roof and starting from scratch. Why not add new roof shingles over old.

But if the current. Damaged decking will need to be repaired before you can install any new shingles. Good quality composite shingles can weigh 350 to 450 pounds per square 100 square feet of. Remove the ridge caps.